T The citarum river is one of the main water sources in west java province and plays a vital role in meeting domestic, industrial, and agricultural needs. however, in recent decades, the citarum river has suffered from severe pollution caused by industrial waste, domestic waste, and unmanaged garbage. this situation has had serious impacts on the environment and the health of communities living along the river basin. in response to this crisis, the government issued presidential regulation number 15 of 2018 concerning the acceleration of pollution and environmental damage control in the citarum river basin, which was subsequently followed by west java governor regulation number 5 of 2019 and the implementation of the citarum harum program. the bandung city government, as the upstream area of the river basin, holds a significant responsibility in supporting the implementation of this program. this study examines the regulatory division of authority between city and/or regency governments in managing the river basin, as well as the implementation of the bandung city government\\\'s authority in accordance with statutory regulations within the framework of regional autonomy law. the research method used is a normative juridical approach with qualitative analysis of secondary data, including legal documents, scientific journals, and program reports. the findings conclude that river basin management is a concurrent governmental affair under law number 23 of 2014. although the bandung city government has implemented the seven sectors of the citarum harum program, the implementation still faces challenges in coordination and active public participation.